/*
 * Copyright 2011-2012 Redia A/S
 * 
 * This file is part of Redias Library App for Android.
 *
 *  Redia Library App for Android is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Redia Library App for Android is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with Redia Library App for Android.  If not, see <http://www.gnu.org/licenses/>.
 */
package dk.redia.libraryapp.adapters;

import java.util.ArrayList;
import java.util.List;

import android.database.DataSetObserver;

public class DataSetObserverCollection {
	
	private List<DataSetObserver> observers;
	
	public DataSetObserverCollection() {
		observers = new ArrayList<DataSetObserver>();
	}
	
	public void registerObserver(DataSetObserver o) {
		observers.add(o);
	}
	
	public void unregisterObserver(DataSetObserver o) {
		observers.remove(o);
	}
	
	public void notifyObservers() {
		List<DataSetObserver> observersCopy = new ArrayList<DataSetObserver>(observers);
		for (DataSetObserver dataSetObserver : observersCopy) {
			dataSetObserver.onChanged();
		}
	}
}
